Open Source Python Financial Software for Windows

Take control of your finances with Financial Calculator 8.0, a professional yet easy-to-use desktop tool built for precise, everyday financial calculations. From planning loans and estimating taxes to generating invoices and creating QR codes, this all-in-one software offers 16 specialized sections that make your daily financial and business tasks faster, clearer, and more accurate. Whether you’re a student, small business owner, or finance professional, Financial Calculator brings professional-grade precision to your desktop—no installation required. Perform calculations for Bank, Barcode, Building, Buy & Sell, Commodity, Dividing Money, Inflation, Interest, Internet Usage, Invoice, Loan, Password, Phone, QR Code, Stock Market, and Tax.

Compilation of softwares to use with 98Softwares.

AsaanLedger is a 100% offline double-entry accounting software built for accountants managing books in Excel or manual registers. It provides a structured system that ensures accurate, balanced, and professional financial reporting without cloud complexity. Features include company setup with financial year management, chart of accounts with opening balances, general journal entries, automatic ledger posting, ledger reports, trial balance, profit & loss statement, balance sheet, and daybook. All reports are generated instantly and remain properly balanced. No internet required. No monthly subscription. One-time lifetime license. A full 30-day free trial is available with no credit card required. After trial expiry, activation is completed securely using a machine ID–based license system.

OpEx is an application suite that includes the main building blocks of commercial electronic trading systems. All OpEx applications run on distributed system architectures.

Petoron Seal Contracts (PSC) Fully binary .psc contract format TTL (time to live) built-in Ed25519 participant signatures Executed-flag to prevent reuse External .sig signature support Fully offline and P2P-ready Compatible with Petoron Time Burn Cipher (PTBC) https://github.com/01alekseev/PSC